Saltire has previously won work with Perth & Kinross and Angus councils and want to win more work across the east coast of Scotland.
General manager John Reynolds said: “It has always been our plan to push more into the east coast and being part of a larger group after our recent acquisition allows that to happen faster.
“Saltire will seek to win public sector contracts through competitive tendering and great customer service, a reputation that we have worked hard to build up.
“We will also roll out a large domestic heating marketing campaign and look at growth by acquiring other east coast operators.”
Saltire has more than 320 direct employees and an annual turnover of £30 million. The Dundee depot will be its fifth location.
Saltire was acquired by United Capital in May as part of the investment group’s ambitious buy-and-build strategy which sees the company target the acquisition of UK building services and facilities management companies with a collective turnover of £300m over the next three years.
One of Scotland’s largest heating firms to set up Dundee depot